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Finding the Fourth Proportional to 159,299.61, 219,833.52 and 87,679.12

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Solution

The fourth proportional to 159,299.61, 219,833.52 and 87,679.12 is: 120,997.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,299.61 : 219,833.52 = 87,679.12 : x
  2. Step 2: Convert to fraction form
    159,299.61/219,833.52 = 87,679.12/x
  3. Step 3: Cross multiply
    159,299.61x = 219,833.52 × 87,679.12
  4. Step 4: Simplify right side
    159,299.61x = 19,274,809,580.10
  5. Step 5: Solve for x
    x = 19,274,809,580.10/159,299.61
  6. Step 6: Final answer
    x = 120,997.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.